No Picture (Tuner_Dtv) - Samsung 2333HD Service Manual

4-6. No Picture (Tuner_DTV)

Symptom The LED power turns on but the screen is blank when the Antenna Cable is connected.
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Even though the LED power turns on, the screen is blank when connecting the Antenna Cable.
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Check the Antenna Cable connections.
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Major
checkpoints
Check whether the LVDS cable is connected correctly to the panel.
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Check whether the lamp connector of the panel is connected correctly to the IP board.
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Diagnostics
Lamp on, No signal image.
④ Does the signal appear at
④ Does the signal appear at
Caution Make sure to disconnect the power before working on the IP board.
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IC4010
Main Board Front
Power Indicator is off.
Yes
R5899?
Yes
#16~25of TU5003?
Yes
Check a LVDS cable?
Replace lcd panel?
TU5003
No
check antenna cable
Check the Tuner Vcc 5V.
No
Change a main PBA.
check antenna cable
No
Change a main PBA
No
Please, Call to Samsung Co. LTD.
4. Troubleshooting
4-13